Using Spire.PDF Free in web app

[sebastianpmb]

Hi !
I would like to know if Spire.PDF (Free) works within a C# MVC web app.
I can make it work as a stand alone app, but I keep having a COM error inside a web controller.

Thanks !

[Brian.Li]

Hello,

Thanks for your inquiry.
Our Free Spire.PDF can be used in a C# MVC web application. Here I created a sample project for your better reference. You can also replace it with your code for testing.

If you encounter any issues during the test, please provide your test code to help us investigate further. Looking forward to your feedback.

Sincerely,
Brian
E-iceblue support team

[sebastianpmb]

Thanks for the reply Brian,

your code works fine.

I´m trying to convert from an HTML page.

Here is the code:

String url = "xxxxxxxxxxxxxxx";

PdfDocument document2 = new PdfDocument();

Thread thread = new Thread(() =>
{


PdfPageBase page2 = document2.AppendPage();
PdfPageSettings setting = new PdfPageSettings();
setting.Size = PdfPageSize.A4;

PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
htmlLayoutFormat.IsWaiting = true;


document2.LoadFromHTML(url, false, false, false, setting, htmlLayoutFormat);
});

thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();
//Save pdf file.
document2.SaveToFile(Server.MapPath("result.pdf"));

document2.Close();

but i receive this COM error (sorry for the portuguese)

System.Runtime.InteropServices.COMException
HResult=0x80004005
Message=Erro HRESULT E_FAIL foi retornado de uma chamada para o componente COM.
Source=<Cannot evaluate the exception source>
StackTrace:
<Cannot evaluate the exception stack trace>

[Brian.Li]

Hello,

Thanks for your response.
I tested your code but did not encounter any issue. This is my test project, please run it directly on your side and then let us know your test result.

Besides, our Spire.PDF provides a new plugin method to convert HTML to PDF, which has a better performance than the method you used. You can give it a try.

Sincerely,
Brian
E-iceblue support team

[sebastianpmb]

Thanks Brian,

I tried your code and gave the same error as mine, a COM error.
So I guess I have an installation issue, some DLL or component may be missigng.

[Brian.Li]

Hello,

Thanks for your feedback.

I tried to run my project on several computers but still didn’t encounter any issue. I’m afraid this issue may be related to your Visual Studio or your system settings. Or as you said, this may be caused by missing some dlls or components. Thus, I recommend you can run the project on other computers or other version of Visual Studio to see if the issue still occurs.

Besides, I also tried to search on some technology forums based on your error message, and I found this solution: https://social.msdn.microsoft.com/Forum ... 0x80004005 . Hope it can help you.

Sincerely,
Brian
E-iceblue support team